Device for cleaning filters.



L. V. HOOD.

DEVICE FOR CLEANING FILTERS.

APPLICATION FILED MAY 29, 1909.

Patented Feb.22, 1910.

NT FFI.

'LLOYD VINCENT ROOD, 0F MARIETTA, OHIO.

DEVICE FOR CLEANING FILTERS.

Patented Feb. 22, 1910.-

Serial No. 499,095.

To all whom it may concern:

Be it known that I, LLoYD VINCENT R001), a citizen of the United States,residing at Marietta, in the county of Vashington and State of Ohio,have invented a new and useful Device for Cleaning Filters, of which thefollowing is a specification.

My invention relates to filters of that general class shown in UnitedStates Letters Patent, granted to me on the 25th day of December, 1906,under No. 839,514.

The object of the invention is to generally improve and simplify theconstruction of the filter cleaning device and render the same moreefficient by the provision of pivotally connected arc bars to which thescrapers are attached, and which automatically operate to hold thescrapers in contact with the filtering element.

lVith these advantages and other objects in view, which will be shown inthe following specification and set forth in the claims, my inventionembraces the structure illustrated in the accompanying drawings, inwhich:

Figure 1 is a side elevation of the filter. Fig. 2 is a longitudinalsectional View of the same. Fig. 3 is a cross sectional view taken onthe line AB of Fig. 2. Fig. 4 is a perspective view of the improvedfilter cleaning device.

Referring to the drawings, in which like characters of referencedesignate similar parts wherever they occur, the filter is shown havingspaced heads 5 and 6, clamping rods 7, hollow flange 8, transparentcasing 9, discharge faucets 10 and 11, stationary filtering element 12,and a rotating water wheel 13.

I lay no claim to the above construction as it is described and claimedin my former patent above referred to. My present invention residesinstead, in the improved cleaning device to be assembled with a filterof this kind, and which will now be described.

Secured to the bottom of the water wheel 13 are downwardly extendinglugs 14, provided with transversely disposed annular openings adapted toreceive pivot pins 15 which project through the ends of the annularopenings a sufficient distance to engage tubular bearings 16 and 17disposed laterally on the V-shaped ends 18 of the links 19. These pivotpins are of a size to snugly fit said bearings and to permit a pivotalmovement of the links. The opposite ends of the links 19 terminate ininverted V-shaped branches 20 and 21 having lateral tubular bearings 22and 23 adapted to receive a pivot pin 24. Disposed on this pivot pinintermediate the inner faces of the inverted V- shaped branches 20 and21 of the links 19 are sleeves 25, constituting bearings for theterminal up-standing lugs 26 formed on the upper surface of the arc bars27. Each one of the up-standing lugs 26 is provided with a longitudinalopening adapted to receive and snugly fit a pin which terminates in acurved plate 28 constituting a weight. By this construction the links 19and weights 28 are pivotally connected together. The opposed ends of thearc bars 27 are provided with apertured lugs 29 and 30 adapted toreceive and slidingly fit a pivot pin, which connects the opposed endsof the arc bars in a hinge joint. Secured to one of the upstanding lugsforming the hinge oint, is the cleaning device, which consists of a baror scraper 31 preferably of metal and equal in length to the length ofthe stationary filtering element 12, and adapted to be held in contacttherewith.

Pivotally connected to the links 19 is another pair of arc bars 32similar in construction to the above described are bars 27that is theyare terminally provided with apertured lugs adapted to receive andsnugly fit the pin which supports the weights 28, and have the aperturedlugs 33 and 34 disposed on their opposite ends connected in a hingejoint positioned directly opposite the hinge joint of the arc bars 27.Secured to one of the lugs is a scraper 35 similar to the scraper 31above described and adapted to be held in contact with the stationaryfiltering element diametrically opposite to the above described scraper.By having the scrapers secured to the hinged terminals of the arc bars27 and 32 in the manner described, the scrapers will be adjustedlaterally with respect to the filtering element as the two pair ofhinged arc bars take up the successive changes in position from a circleto an approximate ellipse. The weight 28 when rotated through the mediumof the water wheel 13 is thrown outward by centrifugal force and drawsoutward the ends of the arc bars secured thereto and causes the bars totake up the successive changes in position above described. Vhile thescrapers are preferably made in the form of metal bars, it is notintended to limit the construction to such as brushes of steel,-

intermediate hinge joints to be drawn in- Ward and the scrapers securedthereto held tightly in frictional contact with the filtering element.

From the foregoing description, taken in connection with theaccompanying drawings, it is thought that the construction and operationof the invention will be easily understood without a more extendedexplanation, it being understood that various changes in the form,proportion and minor details of construction may be made withoutsacrificing any of the advantages or departing from the spirit of theinvention.

Having thus described my invention, what I claim is 1. In a filter, acleaning device having a rotating member, links depending from therotating member and terminating in securing heads, yielding barsconnecting all of said links together, and cleaning members V carried bysaid bars and adapted to engage the filtering element.

2. In a filter, a cleaning device having a rotating member, linkspivotally secured to the rotating member, relatively movable barsconnecting all of said links together, and cleaning members assembledwith said bars and adapted to engage the filtering element.

8. In a filter, a cleaning device having a rotating member, lugsdepending from the rotating member, links pivotally secured to said lugsand terminating in spaced ends adapted to pivotally secure a weight,bars connecting said links and adapted to embrace the filtering element,pivotal connections between the bars and the links, cleaning membersconnected to said bars, and means for holding the cleaning members incontact with the filtering element.

4. In a filter, a cleaning device having a rotating member, lugs carriedby the rotating member, links pivotally secured at one end to said lugs,and having terminal means for pivotally securing a Weight, pivotallyconnected bars connecting said links and adjustable laterally to theWalls of the filtering element, cleaning members carried by said barsand adapted to impinge the walls of the filtering element, and weightsassembled with said links and operating to hold said cleaning members incontact with the walls of the filtering element.

5. In a filter, a cleaning device having a rotating member, linkspivotally connected to the rotating member, said links terminating insecuring heads adapted to pivotally secure weights, relatively movablebars pivotally secured at one end to said links and connected togetherat the opposite ends with a hinge joint, scrapers carried by said barsand adapted to engage in the walls of the filtering element, and weightspivotally connected to said links and operating to hold said scrapers incontact with the walls of the filtering element.

6. In a filter, a cleaning device having a rotating member, aperturedlugs depending from the rotating member, links terminating in spacedheads adapted at one end to pivotally receive said apertured lugs, andthe other to pivotally secure a weight, yielding arc bars connectingsaid links, pivotal connections between said are bars and said links,scrapers secured to said are bars, and Weights pivotally connected atone end of the said links and operating to hold said scrapers in contactwith the walls of the filtering element.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signa ture in the presence of two witnesses.

LLOYD VINCENT ROOD.

\Vitnesses GEORGE E. CALDWELL, ELVA MARTIN.

